Mark was going to replace the transmission fluid and fix a torn rubber cover of the drive mode selection stick. Having opened up the car he realized that he got a wrong filter part for transmission. This was not his fault (apparently yourmechanic did not ). So Mark had to come again and do a lot of extra work (for no additional pay). He also tried to glue the torn rubber. Somehow he put far too much glue and glued together parts which prevented the drive selection stick from going into some modes. He also somehow managed to leave unremovable superglue on the steering wheel. When I contacted him he came to separate the accidentally glued parts. He managed to fix the sticking but as a result also the part which was supposed to be glued disconnected again.
He then told me he is going to look into replacing the part. He did not get back for two weeks. After I reminded him he said he could not figure out the part and said he'll get back to me. But after another week I just went to the authorized dealer and got it fixed. I also checked online and the part was very easy to find on audiparts.com

Rusty, was very professional, showed up on time, took pictures of the car, and explained the work that was going to be done. They did what their website said they were going to do. When the work was done, he sent me an email explaining with recorded message of their work. I had some of my own parts and they reduced that amount of my bill when the work was complete.
They also did a complete car inspection and let me know the overall health of the car and status of the rest of the car. I was very pleased with their service and would definitely use them again and recommend them.

All about Valve Cover Gasket Replacement

The valve cover is a metal cover that is found on very top of the engine. The valve cover is attached to the engine by a gasket made of rubber or cork. The valve cover and gasket seal the top of the engine and prevent oil leaks. These covers are removable so the mechanic can access the valves for adjustment. Because of the high temperature of the engine, it is common for the valve cover gasket to get brittle and break. If the gasket is worn out, it will leak engine oil and the top of the engine will be covered in oil. Since the engine is losing oil, running the car for too long without an inspection and repair can cause engine damage.

Your engine’s internal pieces are lubricated with oil. This oil needs to stay in the engine, because the engine relies on it, and it can be harmful if it leaks out. To keep the oil where it belongs, your engine is sealed in many places. On the top, your engine is sealed by the valve cover. This valve cover has a gasket (which is made out of rubber or cork), which seals the cover to the engine, and keeps any oil from leaking out.
If the gasket deteriorates, oil will begin to leak out. If the oil leaks out, your engine will not be properly lubricated, and serious engine damage can occur. Oil that leaks out through the valve cover gasket can also fall into the exhaust system and ignite an engine fire.